List all bad blocks may help user check the status of dust. We add this
logical in dust_status, which will return result to user directly.
Signed-off-by: yangerkun <yangerkun@xxxxxxxxxx>
---
drivers/md/dm-dust.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/drivers/md/dm-dust.c b/drivers/md/dm-dust.c
index ff03b90072c5..f96adb240adc 100644
--- a/drivers/md/dm-dust.c
+++ b/drivers/md/dm-dust.c
@@ -478,6 +478,30 @@ static int dust_message(struct dm_target *ti, unsigned int argc, char **argv,
return r;
}
+static void dust_list_badblocks(struct dust_device *dd, char *result, unsigned int maxlen,
+ unsigned int *sz_ptr)
+{
+ unsigned long flags;
+ struct rb_root badblocklist;
+ struct rb_node *node;
+ struct badblock *bblk;
+ unsigned int sz = *sz_ptr;
+ int num = 0;
+
+ DMEMIT(" badblocks list:");
+ spin_lock_irqsave(&dd->dust_lock, flags);
+ badblocklist = dd->badblocklist;
+ for (node = rb_first(&badblocklist); node; node = rb_next(node)) {
+ bblk = rb_entry(node, struct badblock, node);
+ DMEMIT(" %llu", bblk->bb);
+ num++;
+ }
+
+ spin_unlock_irqrestore(&dd->dust_lock, flags);
+ if (!num)
+ DMEMIT(" null");
+}
+
static void dust_status(struct dm_target *ti, status_type_t type,
unsigned int status_flags, char *result, unsigned int maxlen)
{
@@ -489,6 +513,7 @@ static void dust_status(struct dm_target *ti, status_type_t type,
DMEMIT("%s %s %s", dd->dev->name,
dd->fail_read_on_bb ? "fail_read_on_bad_block" : "bypass",
dd->quiet_mode ? "quiet" : "verbose");
+ dust_list_badblocks(dd, result, maxlen, &sz);
break;
case STATUSTYPE_TABLE:
--
2.25.4
--
dm-devel mailing list
dm-devel@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/dm-devel
